Bolaget mono



N. H. WENEIL I GAS ANALYZING APPARATUS. APPLICATION FILED JULY 30,1918.

2 SHEETS-SHEET I.

Ala e117?! N L: HA/mw Ways Patented Dec. 30, 1919.

N. H. WENER.

GAS ANALYZING APPARATUS. APPLICATION FILED JULY 30, 19:8.

1,326,814. Patented Dec. 30,1919.

2 SHEETS-SHEET 2.

k f A f2 25 9 26 f 28 F 2.9 50 r 1a UNITED PATENT OFFICE.

NILS HARALD WEN ER; OF STOCKHOLM, SWEDEN, ASSIGNOR T0 SVENSKA.AKTIE BOLAGET MONQ'DF STOCKHOLM, SWEDEN.

GAS ANAIiYZING AlPPARATUS.

Specification of Letters Patent.

Patented Dec. 30,1919.

Application filed July 30, 1918. -'Seria1No. 247,416.

To all'whom z't may concern:

Be it known that -I,*NILs HARALD WENER, civil-engineer, subject of the King of Sweden, residing at '11 'Uppsalagatan, Stock- 1101111, Sweden, have invented certain new and useful improvements in Gas-Analyzing Apparatus, of which the following is a specification.

The present invention relates to improvements in gas-analyzing apparatus 'which are worked "by pressure 1 above or below atmospheric, :and in which during the operation a certain action, as forinstancethe reversing of a cock, the opening or'closing of a Valve, the starting of registering device and so onis intended to-take place. Such actions are particularly requiredin gasanalyzing apparatus, in which two or more analyses-of different kinds are tobe carried out successively and al ternatelyl T he purpose of the inventionis automatically and ina verysiniple manner to bring about an action-oi the kind above described, for instance the regular adjusting of the analyzing apparatus for analyses of one or the" other kind.

The invention consists inthatthe said action is effected directly or indirectly by means of the changing pressure of the pumping device of the apparatus, 'or the pressure of the conduit leading'to the primary measuring-vessel. A piping, preferably in parallel with the pressurespiping connected with the apparatus, leads to a pressure-chamber of one kind or another,

where the pressure is caused to effect motion and this motion is then utilized for effecting "the action wanted.

For instance in case'of an apparatus of the kind above describedyz'. e. an apparatus by means of which two or more analyses of different kinds are to be effected'a cook or the like is used which alternately connects the pumping-device to one or the other gas analyzing apparatus and which isoperated by a piston movable in a cylinder which in its turnis connected with the pressure-pipe leading to the pump.

In the accompanyingdrawing Figures 1,

2 and 3 show schematically three embodiments ofthe'invention. 'Figs. 1 and 2 show an arrangement in which the driving pump1ng-dev1ce ls'connected with two gas- ;analyzing apparatus,and Fig. 3 shows an arrangement with only a single! gas an'alyzing apparatus.

In Fig. '1 P I indicates a i pump worked by a pressure fluid and containing mercury and which maybe constructed it'or instance according. to the German Patent No. 226,542 being provided with two vessels a and 9b communicating with each other through. an opening 0. In the inner vessel b the ascending pipe a5 is arrangedwhiclr opens into the vessel 6. From this vessela return+pipe-rf leads to thetubeg. Thegas-analyzingvapparatus are connected in a known manner with the pipe AIn the drawingM and M are the two primary measuring-vessels of these gas analyzing apparatus.

The -;vessel 17) communicates through :the pipe h and the pressure-reducing valve .71 with the pressure (fluid working the pump P, said fluid being obtained from 'a \source not shown.

As known, the working of the pump depends upon the :increase of pressure in rthe vessel 6, whereby the mercury in .this vessel is pressed higher andhigherin the ascending pipe d. At "the same time the mercury rises in all vessels andtu'bes connected with the pipe 9, thereby dischargingrsamples:to

the 1 gas-analyzing apparatus.

At last the mercuryin the ascending pipe 01 reaches the :upper opening o-fcthesame and assoonasa smallipart of the mercury has been ejected the whole column which now 11 becomes shorter and shorter and therefore lighter l and lighter is forced out of the pipe d. Thisjejected-mercury flows through the return; pipe f1 back to the tube, 9. .After last the surface of the mercury has risen so high that apart of the mercury can'flow throughthe opening a into the vessel d, and

now the pumpingidevice is again put iiniaction, as the free connection with the atxnosphere is again shut oil.

In this way, as maybe seen, a falling-and :risingof theliquidcolumn and also a corresponding change of the pressure prevailingin the system will be effected. Oneof these changes is, according to the invention, utilized :for reversing the cock k.

the contact According to Fig. l the increase of pressure as well as the variation of the mercury level in the vessel 6 are utilized for the reversing of the cock is. In the vessel Z; a contact bar Z is arranged, the lower end of which enters into the mercury, when the surface of the same stands in its uppermost position. This contact bar is connected through a wire m and source of current 0 with one end of the winding of an electromagnet 71. the other end of which is connected with the mercury in the vessel a. The armature p of the electromagnet is provided with a nose 9 cooperating with a counter-nose r of a reciprocating bar .9. This bar is provided with a pawl t cooperating with the ratchet-wheel u. The latter is fastened to a shaft 12 which also carries the cock k. The bar 3 is further connected with a piston to movable in a cylinder m which cylinder is connected by means of a pipe y with the pipe h. 2 indicates a spring which tends to displace the bar .9 to the left.

The mode of operation is as follows: When the pressure in the pipes h and y increases, the piston 10 will be displaced to the right against the action of the spring The spring is then put under pressure and the different parts take the positions shown in the drawing. As soon as the vessel Z) is put in communication with the atmospherical air, atmospherical pressure will prevail in the pipe and also in the cylinder w, while a displacement of the bar 8 to the left is at first prevented by the nose Q. In a short time, however, the surface of mercury in a will come into contact with bar Z whereby the electric circuit is closed. The armature p is then attracted, so that the bar 8 is freed and is moved to the left by the spring .2, whereby the ratchet wheel a and consequently also the cock are operated. Now the reversal has taken place and the pump will then operate the second of the two gas analyzing apparatus. In this way, consequently, one or the other apparatus will be operated alternately.

In the same manner three or more apparatus may be successively put in and out of operation.

Fig. 2 shows another embodiment of the reversing device in which no electric circuit is employed. The piston to acts upon a double lever 2 swinging on the shaft 0 and provided with a pawl 3 cooperating with the ratchet-wheel u. A spring 1 is supposed to hold this lever 2 in the position shown. The p1pe y is provided with a branch 5', leading to a cylinder 6 the piston of which 15; connected with a slipper 8. 9 indicates a pawl-lever, swingably mounted on a shaft 10 and held in the position shown by a spring 11. The one end of the pawl-lever 9 carries a push-roller 12, cooperating with the slipper 8, and the other end is provided with a pawl 13, arranged in the path of a projection 14 of the lever 2.

The mode of operation of the device is the following: When the pressure increases in the pipes h, 4) and 5, at first the releasing device is .put into action. The piston 7 rises and the slipper 8, when passing the' roller 12, pushes the same backward, so that the pawl-lever 9 is moved and the lever 2 is released. The spring 1 then causes this lever to swing whereby the wheel a and, consequently, also the cock is (Fig. 1) is operated. Tn a short time the pressure has risen to such a degree that the piston to will be lifted. The spring 4 is thereby put under tension, until at last the lever 2 is caught by the pawl-lever 9 and held fast. At this moment the maximum pressure is reached and the pump is released so that the overpressure in the pipes y and 5 ceases. The piston 7 then sinks down to its end-position in which the slipper 8 is not in contact with the push-roller 12, and the same course of operation may then begin again. i

It is obvious that the parts may be adjusted in such a manner that the release can take place at any pressure and even on reaching the maximum pressure. For example, in the embodiment shown in Fig. 1, the contact bar 1 may be positioned at any desired height. If, for instance, it is not wanted to effect every second analysis in one and every second in the other apparatus, but to analyze for a certain time in one apparatus and then in the other, the release of the lever 9 may be effected by means of a clock-work.

Fig. 3 shows an embodiment which is simplified in that a single measuring-vessel is used which is connected alternately to the two gas-pipes. a indicates the pump-vessel continually fed with water through the pipe 15. 16 is a siphon which opens into the vessel a and through which the vessel a is emptied when the maximum pressure is reached. 17 is a tube leading to a certain pressure-vessel 18. From the liquid-space of this vessel the pipes 19 and 21 rise which both lead in a known manner to the absorption-receptacle 19 through the measuring-vessel M and the pipe 20.

The pipe 22 opens at one side into the measuring-vessel M through a liquid-seal 21 and at the other side into the chest of a three-way cook 23. The two other ways of this cock are connected through the pipes 24 and25 with the gas-pipes P and P The plug of the cock 23 is arranged on a shaft 26 which carries a ratchet-wheel 27 cooperating with a shifting bar 28, arranged on a piston 29. The cylinder 30, in which this piston moves, is connected by means of a plpe 31 with the vessels at and 18.

The mode of operation of this pumping device does not essentially differ from that of the device shown in Fig. 1. The siphon 16 acts in the same manner as the return pipe f in Fig. 1. When the fixed pressure is obtained, the wheel 27 and the shaft 26 are operated, so that the pipe 22 is alternately connected with P and P.

It is obvious, that this device is very simple. It is, however, to be observed, that in an arrangement with only one measuringvessel the inconvenience arises that at each analysis a remainder of gas from the foregoing analysis will be mixed with the new quantity of gas.

It is obvious that the arrangement according to Fig. 3 can be combined with a pumping device according to Fig. 1.

In most gas analyzing apparatus the diagram is obtained by means of a clock-work. According to the invention, however, it is also possible to obtain the diagram by means of the pressure above or below atmospheric.

We claim:

1. In an apparatus of the class described, the combination with a plurality of gassampling receptacles, of a fluid pressure pump common to said sampling receptacles and operating by intermittent pressure within the system, a valve for opening communication between said pump and each of said sampling receptacles in rotation, and means responsive to the fluctuations of pressure within the system for actuating said valve.

2. In a device such as is set forth in claim 1, means for constantly supplying a pressure medium to the pump, a pumping liquid in the pump acted upon by said pressure medium, whereby pressure is accumulated, means for periodically relieving the pres sure, and a pressure responsive device in communication with the pressure medium for actuating the valve and the sampling receptacles.

3. In a device such as is set forth in claim 2, means whereby the pressure medium causes a surging back and forth of the pumping liquid, means for controlling the valve actuating means, and means actuated by the movement of the pumping liquid for actuating said controlling means.

4. A device such as is set forth in claim 3, in which the pumping liquid comprises a conductor of electricity and the means for actuating said controlling means comprises an electromagnet, and a contact member in circuit with the coil of said electromagnet and positioned above the pumping liquid, and having a portion which is above the lowest level but below the highest level of said liquid, whereby said portion is alternately immersed in and freed from said liquid, and said circuit is alternately closed and opened.

In testimony whereof I aflix my signature in presence of two witnesses.

NILS HARALD WENER.

Witnesses:

, JACOB BAeen,

Fm'rz E. HALLIN.

between the pump 

